South construction phase
Gernheim-Allmendfeld to Riedstadt-Wolfskehlen
Engineering services
Structural engineering, LPH 1-6
Special services
- Participation in planning approval procedures
- Project coordination
- Surveying services
- Building site investigation
- Building site assessment
Client
Hessenwasser GmbH
Taunusstraße 100
64521 Groß-Gerau
Processing period
Planning: 2017 - 2023
Construction: 2024 - 2027
Contact
Dipl.-Ing. Heinz Militz
Project Management
Tel. +49 (0)201 89 67-152
h.militz@dahlem-ingenieure.de
The lifeline für the region
The new Ried pipeline is the largest infrastructure project for the coming years by Hessenwasser, one of the largest water supply companies in Germany. The existing pipeline will be supplemented by a new pipeline along its entire length in four construction phases, which is expected to be completed by the end of 2030. For this purpose, a redundant drinking water transport pipeline will be built west of Darmstadt.
The length of the planned steel pipeline with diameters of DN 1000 and DN 1100 will be approximately 34.8 kilometers in the central and southern sections and will run from the Haßloch pressure booster station in the north to the Allmendfeld waterworks in the south. This also includes a connection to the Eschollbrücken waterworks and a new pressure booster station to be built there.
The route lies partly in drinking water protection areas, crosses various nature and landscape conservation areas, and is often located in areas with high groundwater levels. DAHLEM is providing the technical engineering services for the planning of the construction project, such as the design, approval, and implementation planning, as well as the preparation and participation in the awarding of contracts. Structural engineering and technical equipment services are also being provided.
- The drinking water supply for the Rhine-Main metropolitan region should be sustainable and climate-proof.
- 40% of the daily drinking water requirements of the conurbation are supplied via the Ried pipeline.
- 35 km long
- Planned completion: 2030
- Planned investment volume: €150 million
- Route planning in careful coordination with all stakeholders from the fields of culture, water, forestry, nature, etc.
- Species protection and minimization of impact
Current information is available on the corresponding Hessenwasser project website [German].
The new Ried pipeline is the largest infrastructure project for the coming years by Hessenwasser, one of the largest water supply companies in Germany. The existing pipeline will be supplemented by a new pipeline along its entire length in four construction phases, which is expected to be completed by the end of 2030. For this purpose, a redundant drinking water transport pipeline will be built west of Darmstadt.
The length of the planned steel pipeline with diameters of DN 1000 and DN 1100 will be approximately 34.8 kilometers in the central and southern sections and will run from the Haßloch pressure booster station in the north to the Allmendfeld waterworks in the south. This also includes a connection to the Eschollbrücken waterworks and a new pressure booster station to be built there.
The route lies partly in drinking water protection areas, crosses various nature and landscape conservation areas, and is often located in areas with high groundwater levels. DAHLEM is providing the technical engineering services for the planning of the construction project, such as the design, approval, and implementation planning, as well as the preparation and participation in the awarding of contracts. Structural engineering and technical equipment services are also being provided.
- The drinking water supply for the Rhine-Main metropolitan region should be sustainable and climate-proof.
- 40% of the daily drinking water requirements of the conurbation are supplied via the Ried pipeline.
- 35 km long
- Planned completion: 2030
- Planned investment volume: €150 million
- Route planning in careful coordination with all stakeholders from the fields of culture, water, forestry, nature, etc.
- Species protection and minimization of impact
Current information is available on the corresponding Hessenwasser project website [German].
SHORTDESCRIPTION
The southern section of the construction project runs from Gernsheim-Allmendfeld to Riedstadt-Wolfskehlen. During the laying of 16.93 km of the new Ried pipeline, a total of 15 underpasses must be constructed using the microtunneling method. The first underpass beneath the Riedbahn railway line was successfully completed in April 2024. The 25-ton drilling machine took 50 hours to complete the 40 m long and 4 m deep underpass beneath the track. A casing pipe with an inner diameter of 1.60 m was laid, which serves as emergency protection for the new Ried pipeline (inner diameter 1.20 m) in the event of a pipe rupture.
The specific planning objectives are:
Southern construction phase
- Services from design planning to participation in the awarding of contracts
- Structural engineering services
- Technical equipment services for the Eschollbrücken pressure boosting system
- Construction management
- Approval: End of 2022
- Start of construction: End of 2024, construction period: expected to be 3.5 years
The southern section of the construction project runs from Gernsheim-Allmendfeld to Riedstadt-Wolfskehlen. During the laying of 16.93 km of the new Ried pipeline, a total of 15 underpasses must be constructed using the microtunneling method. The first underpass beneath the Riedbahn railway line was successfully completed in April 2024. The 25-ton drilling machine took 50 hours to complete the 40 m long and 4 m deep underpass beneath the track. A casing pipe with an inner diameter of 1.60 m was laid, which serves as emergency protection for the new Ried pipeline (inner diameter 1.20 m) in the event of a pipe rupture.
The specific planning objectives are:
Southern construction phase
- Services from design planning to participation in the awarding of contracts
- Structural engineering services
- Technical equipment services for the Eschollbrücken pressure boosting system
- Construction management
- Approval: End of 2022
- Start of construction: End of 2024, construction period: expected to be 3.5 years
Project data
- Section Gernheim-Allmendfeld to Riedstadt-Wolfskehlen
- Redundant new construction of the Ried pipeline DN 1000 – length 16.93 km
- New construction of the Eschollbrücken waterworks connection pipeline DN 800 – length 1.46 km
- Steel pipes with ZM lining and PE coating as well as cathodic corrosion protection system
- Approx. 15 km of pipeline in open construction
- 8 crossings in open construction
- 16 pipe jacking with protective pipe (up to DN 1600)
- 45 shaft structures (ventilation, drainage, etc.)
- New construction of pressure boosting system (technical equipment)
- Railway line crossing (Riedbahn)
- Crossings of watercourses
- Crossings of classified roads
- 2 crossings of sewage channels
- Crossing of watercourses with dikes
- Parallel route to federal highway 67
- Approx. 2,675 m relocation of irrigation pipes
- Approx. 525 m relocation of wastewater pressure pipe
- Planning approval procedure in accordance with Section 65 (1) UVPG
